Bosch HSS-Co Metal Drill Bit 4mm DIN 338 - Pack of 10

Summary

The Bosch HSS-Co 4mm Metal Drill Bit (2608585880) is a cobalt-alloyed, fully ground twist drill bit designed for demanding metalworking applications, particularly in stainless and hard steels. Supplied in a pack of 10, it is manufactured to DIN 338 and suits trade professionals in construction, engineering, and installation.

Features

• Manufactured from high-speed steel alloyed with 5% cobalt, providing outstanding heat and wear resistance during prolonged use.
• Fully ground HSS construction delivers an excellent surface finish and consistent dimensional accuracy throughout the bit's life.
• 135deg split-point tip ensures precise centring and active cutting action without wandering or pre-marking.
• Type N flute geometry (DIN 338) with two cutting edges and two flutes evacuates swarf efficiently, reducing heat build-up.
• Suitable for alloyed and unalloyed steel, stainless steel (V2A/V4A), cast iron, cast steel, and acid- and heat-resistant steels.
• Cylindrical shank with h8 diameter tolerance is compatible with standard three-jaw drill chucks, pillar drills, and drill stands.
• Delivers up to 40% faster drilling rates and approximately 50% lower feed pressure compared with standard HSS bits.
• Pack of 10 offers excellent trade value for repetitive metalwork, pre-drilling for anchors, rivets, and fixtures.

Specifications

• SKU / Part Number: 2608585880
• Diameter: 4 mm
• Working Length: 43 mm
• Overall Length: 75 mm
• Material: HSS-Co (High-Speed Steel with 5% Cobalt)
• Standard: DIN 338, Type N
• Tip Angle: 135deg
• Shank Type: Cylindrical
• Diameter Tolerance: h8
• Pack Quantity: 10 pieces

What's Included

• 10 x Bosch HSS-Co 4mm Twist Drill Bits